Examination Data Analysis of Hygienic Status and Microbial Index of Drinking Water in Schools of Mianyang City in 2007

[Objective]To understand the hygienic status of drinking water in schools of Mianyang city,provide scientific basis for health supervision and monitoring of drinking water quality in schools.[Methods]Data of drinking water quality investigation and microbial index test in 682 universities,technical secondary schools,middle and primary schools in Mianyang in 2007 were analyzed.[Results]1 128 water samples were tested,777 of them were qualified for microbial index,accounting for 66.88%.The qualification rate was 81.11%,56.01%,71.59%(P0.01),88.46% and 67.94%(P0.01) of the water samples from the water supply of municipal administration,self-supply drinking water,second water supply,university,technical secondary schools,middle and primary schools respectively.Of the 1 128 water samples,the qualified rate of total colony,coli group and free residual chlorine was 83.51%,89.54% and 76.68% respectively.80.73% and 97.44% of the schools with self-drinking water supply had hygienic license and health certificate while 93.55% and 95.83% of the schools with secondary water supply had hygienic license and health certificate(P0.05).Of the 182 employees investigated,the awareness rate of health knowledge and related laws and regulations knowledge was 61.95% and the knowledge of water disinfection was 62.91%.[Conclusion]The qualification rate of microbial index of drinking water quality was lower in schools in Mianyang.Health knowledge level of employees was lower.